Improvement in trusses for vessels



waited tatr CHARLES FURBISH, OF BUQKSIORR'MAINE Letters Patent No. 98,242, dated December 28, 1869.

IMPROVEMENT IN TRUSSBS FOR 'VESSELS.

The Schedule referred to in these Letters Patent and making part ofthe sama Be it known that I, GHAnLEsFURBIsH, of' Bucks port, iu the county of Hancock, and State of Maine, have invented a new and ,useful Improved Apparatus for Supporting the Yards of Vessels; and I do hereby declare the following to be a full, clear, and exact description of the construction and operation of the Sallie, reference beingha-d to the annexed drawings, making a partof this specification.

This invention consists in the construction and arrangement ofthe devices hereinafter described, and in their combination with those ordinarily yin use, for supporting heavy yard-arms of large ships, so as to relieve the joints and workiiig-portions of a large amount ot' friclicn,and enable the yard to be braced or shifted with greater ease and facility.

To enable others skilled in the art to which this belongs, to make and use saine, I will now. proceed to describe its consti-action and operation.

Like letters apply to corresponding parts in all the figures'.

Figure lis a front elevation of part of the lower mast, the cap, the top-mast-,and yard, with the devices constituting the invention above alluded to attached.

Figure 2 is a side elevation ot' the saine. v

Figure 3 and 4 are views of detached portions of figs., l and 2.

In all the figures, A represents the lower mast; C, the cap; 15, the top-mast, resting upon said cap, and secured to the top-of the lower mast by the ordinary withe, a, outside ot' and surrounding which is the strap or band b, iigs. 2 and 3.

Attached to this band, is the traveller (l, the ends of which pass through and are secured by nuts tothe lugs ff, and to this traveller' the yard D is secnred,'iu the ordinary manner.

.and clamped between the lugs of the loose band or collar F, in the l'rout of .which are also'placed frictionrollers l1. h, as plainly shown in figs. 1 and 2.

In the saine figures, and in iig. 4, H represents a wide band or cylinder, surrounded and secured in its place by the clamp or collar E, which, in turn, is supported upon the enlargement or shoulder t' i', o'f the base ofthe top mast B.

This band or cylinder and clamp or collar forni the support and platform against and upon which turn the rollers c e and h. la, and upon which is thus borne the entire weight of the `vard and its appropriate rigging.v

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent- Ihe struts or arms G G, with rollers e l', the band or collar F, and rollers h h, the support or platform H and E, combined and arranged substantially as herein set forth.

In testimony whereof', I have signedv my nameto this specification, in the presence ot' two subscribing witnesses.

` CHARLES FURBISH.

Witnesses WM.' D. SWAzEY, AMBnosE WHITE. 

